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प्रश्न
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
विकल्प
concave
convex
cylindrical
parabolic
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उत्तर
convex
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संबंधित प्रश्न
What type of image is formed:
on a cinema screen?
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
What is a spherical mirror?
The magnification for a mirror is -3. How are u and v related?
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Center of curvature
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens?
